#181C5D#181C5D

#181C5D is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.114 H 273.3°. Best body text is #FFFFFF at 15.41:1 contrast (WCAG AA passes).

Color values

HEX	#181C5D
RGB	rgb(24, 28, 93)
HSL	hsl(237, 59%, 23%)
HSV	hsv(237, 74%, 36%)
CMYK	cmyk(74.2%, 69.9%, 0%, 63.5%)
CIE-LAB	lab(14.48, 22.42, -39.33)
CIE-LCH	lch(14.48, 45.27, 299.69°)
OKLab	oklab(27.19% 0.0065 -0.1136)
OKLCH	oklch(27.19% 0.114 273.3)
XYZ	xyz(2.7671, 1.8147, 10.5583)
Luminance	0.0181 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C5D #5D5918

analogous

#183E5D #181C5D #36185D

triadic

#181C5D #5D181C #1C5D18

tetradic

#181C5D #5D183E #5D5918 #185D36

square

#181C5D #5D183E #5D5918 #185D36

split-complementary

#181C5D #5D3618 #3E5D18

monochromatic

#060718 #0B0D2C #181C5D #252B8E #3139BE

Accessibility & contrast

On white

15.41

#181C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#181C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C5D

15.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C5D	#FFFFFF	#000000	##FFFFFF
##181C5D	1.00	15.41	1.36	15.41
#FFFFFF	15.41	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285F

Deuteranopia (green-blind)

#00215C

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181c5d;
/* rgb */ color: rgb(24, 28, 93);
/* oklch */ color: oklch(27.2% 0.114 273.3);

Tailwind

colors: {
  custom: {
    50: '#60588c',
    500: '#181c5d',
    950: '#000000',
  },
}

SCSS

$custom: #181c5d;
$custom-light: #60588c;
$custom-dark: #000000;

JSON

{
  "hex": "#181c5d",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 93
  },
  "hsl": {
    "h": 236.522,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.27192,
    "c": 0.11376,
    "h": 273.3
  },
  "luminance": 0.01815
}

Semantic roles & 50–950 ramp

primary

#181C5D

secondary

#938F3D

accent

#D946E2

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181C5D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →